242423437 has 4 divisors (see below), whose sum is σ = 245744380. Its totient is φ = 239102496.

The previous prime is 242423411. The next prime is 242423443. The reversal of 242423437 is 734324242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 734324242 = 2 ⋅367162121.

It can be written as a sum of positive squares in 2 ways, for example, as 161315401 + 81108036 = 12701^2 + 9006^2 .

It is a cyclic number.

It is not a de Polignac number, because 242423437 - 2¹⁵ = 242390669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242423399 and 242423408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242423837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660362 + ... + 1660507.

It is an arithmetic number, because the mean of its divisors is an integer number (61436095).

Almost surely, 2^242423437 is an apocalyptic number.

It is an amenable number.

242423437 is a deficient number, since it is larger than the sum of its proper divisors (3320943).

242423437 is an equidigital number, since it uses as much as digits as its factorization.

242423437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320942.

The product of its digits is 32256, while the sum is 31.

The square root of 242423437 is about 15569.9530185547. The cubic root of 242423437 is about 623.5312172274.

Adding to 242423437 its reverse (734324242), we get a palindrome (976747679).

The spelling of 242423437 in words is "two hundred forty-two million, four hundred twenty-three thousand, four hundred thirty-seven".